Fix more bugs and use dotenv library

docker/Dockerfile

@@ -4,6 +4,10 @@ ENV PYTHONUNBUFFERED=1
 
 WORKDIR /app/data
 
+COPY requirements.txt .
+
+RUN pip install --no-cache-dir -r requirements.txt
+
 COPY config.py /app/bin/
 COPY generate.py /app/bin/
 

src/config.py

@@ -2,16 +2,6 @@ import os
 import re
 
 
-def load_env(filename=".env"):
-    env_vars = {}
-    with open(filename) as f:
-        for line in f:
-            if "=" in line:
-                key, value = line.strip().split("=", 1)
-                env_vars[key] = value
-    return env_vars
-
-
 def count_servers(env_vars):
     server_keys = [key for key in env_vars if re.match(r"PORT_\d+", key)]
     return len(server_keys)
@@ -50,7 +40,6 @@ services:
 
 
 def generate_mediamtx_files(env_vars, num_servers):
-    # os.makedirs("mediamtx")
     mediamtx_dir = "mediamtx"
     if not os.path.exists(mediamtx_dir):
         os.makedirs(mediamtx_dir)
@@ -69,7 +58,7 @@ def generate_mediamtx_files(env_vars, num_servers):
         with open(f"mediamtx/mediamtx_{i}.yml", "w") as f:
             f.write(generated_content)
 
-    existing_files = os.listdir("mediamtx")
+    existing_files = os.listdir(mediamtx_dir)
     for file in existing_files:
         if file.startswith("mediamtx_"):
             file_num = int(file.split("_")[1].split(".")[0])
@@ -84,11 +73,11 @@ def generate_start_bat(num_servers):
 
     obs_instances = ""
     for i in range(1, num_servers + 1):
-        obs_instance = f""" # noqa: E501
+        obs_instance = f"""
 echo Launching OBS instance {i}
 start /MIN "OBS{i}" /D "C:\\Program Files\\obs-studio\\bin\\64bit" "obs64.exe" --profile "Profile{i}" --collection "Profile{i}" --multi --startstreaming
 timeout /t 1 >nul
-"""
+"""  # noqa: E501
         obs_instances += obs_instance
 
     bat_content = bat_template.replace("{{OBS_INSTANCES}}", obs_instances)

src/generate.py

@@ -1,14 +1,16 @@
+from dotenv import dotenv_values
+
 from config import (
     count_servers,
     generate_docker_compose,
     generate_mediamtx_files,
     generate_start_bat,
-    load_env,
 )
 
 
 def main():
-    env_vars = load_env(".env")
+    env_vars = dotenv_values(".env")
+
     num_servers = count_servers(env_vars)
 
     generate_docker_compose(env_vars, num_servers)